Defter Notes vs Deadline Guardian
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Defter Notes
This app provides an infinite canvas for spatial thinking, allowing users to capture, connect, and explore ideas through handwriting, drawing, and text. Organize thoughts with flexible tools and intuitive navigation for enhanced creativity and productivity.
- Infinite canvas for spatial thinking
- Handwritten notes, sketches, and typed text
- Connect and layer ideas
- Organize with Stacks
- Deft movement with gestures
- Cross-reference and multitask documents
- Supports links and files
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Defter Notes is loved by academics, students, teachers, researchers, journal keepers, knowledge workers, designers, architects, engineers, writers, and anyone who thinks best with their hands and eyes. It’s built for people who see ideas as living things: connected, evolving, and worth exploring. Think without boundaries Defter Notes gives you an infinite canvas for spatial thinking. Drop ideas anywhere. Draw connections. Expand as far as your thoughts take you. Enjoy pure creative flow. Capture ideas your way Whether it starts as a quick sketch, a handwritten note, or a PDF you’re diving into, Defter Notes adapts to your process. Write, draw, or type; then move, link, and layer it all together. Your ideas stay flexible and alive. Work the way your brain works Move items freely. Zoom in and out of context. Build hierarchies of Spaces that let you go deeper into your projects. Defter Notes stays out of the way so your focus stays on thinking. Top features * Stacks for deep work: Ideal for reading, studying, or comparing multiple resources. * Deft movement with gestures: Drag pages or extract text directly out of PDFs. * Cross-reference and multitask: View, resize, and reorder documents side by side. * Handwriting and text tools: Combine pen, pencil, marker, and text boxes using Apple Pencil or Scribble. * Fluid editing: Double-tap any item to edit or share. * Intuitive navigation: Use the mini-map, navigation bar, gestures, and select tool to move effortlessly through infinite spaces. * Supports links and files: Drop in PDFs, images, URLs, and attachments right onto your canvas. Join the community: https://discord.com/invite/GjS5tJSmBW Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://www.defternotes.com/touprivacypolicy https://defternotes.com
Deadline Guardian
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Deadline Guardian is your hub for everything that recurs in life – inspections, services, insurance, vaccinations, contracts. Create a device (car, home, pet), add a deadline, and the app warns you in advance – up to 30 days ahead on legal templates. You set the lead time per item, even on the due date itself. After completing it, log the supplier, cost and a photo of the receipt – the app calculates the next due date. WHAT DEADLINE GUARDIAN TRACKS • Vehicle – periodic inspection, mandatory liability insurance, tire swap, oil, brake fluid, timing belt • Home – boiler, lightning protection, fire extinguishers, elevator, septic / wastewater, solar PV, AC, heat pump • Documents – passport, driving licence, tax return, road toll, insurance policies • Health – preventive checkups, vaccinations, mammography, dentist • Family – birthdays, anniversaries, child vaccinations, growth log • Pets – vaccines, deworming, flea/tick, vet visits, microchip • Pool – pH, alkalinity, shock chlorination, winterizing, sand replacement • Garden – fertilizing, pruning, watering, mulching WHY DEADLINE GUARDIAN – 100+ universal templates plus country packs for Czechia, Slovakia, Germany, Austria and Switzerland – Reminders with enough lead time – up to 30 days ahead on legal templates, and you set it per item – Sync across devices (phone ↔ tablet ↔ web) with email sign-in – Cost + supplier per completion – see your annual cost of running a house or car – Correct legal intervals per country – HU/"TÜV", Pickerl, MFK, STK, chimney sweep, vignettes; country picker in Settings – No ads, no tracking – telemetry is anonymous and toggleable – Free at launch – no subscription needed for normal use TYPICAL USE "I missed my STK because I didn't note the date" – never again. The app reminds you well ahead, and you decide how early. "When did we last inspect the lightning rod?" – history per item. Photo of the protocol, invoice, service company name. "How much does my car cost per year?" – monthly / yearly costs grouped by device. "My calendar is full of deadlines" – all of them in one app, push notifications at the right time. PRIVACY (GDPR) The app does NOT collect your precise location, contacts, financial or health data. Telemetry is anonymous and can be turned off any time. Data is hosted in the EU on Supabase. Account deletion is one tap in Settings – immediate erasure including backups within 30 days. TECHNOLOGY • React Native + Expo SDK 54 – native app and web version • Supabase (EU) – authentication, sync, storage • PostHog (EU) – anonymous analytics, opt-out in Settings • Resend – transactional email (sign-in codes) • No advertising SDKs ASTRATECH S.R.O. Built by Astratech s.r.o. (Czechia). Our data, EU hosting, our support. No big tech, no reselling of your data. Web: https://deadlineguardian.app Contact: support@deadlineguardian.app FEEDBACK The app is in active development. Missing something? Email support@deadlineguardian.app – we reply within 7 days, often the same day. Terms of Use: https://deadlineguardian.app/terms-en
Screenshots
Verdict
The clearest difference is update cadence: Deadline Guardian at every 3 days against Defter Notes's every 2 weeks. Deadline Guardian also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Defter Notes sells 7 in-app purchases, starting at $2.99 per month and Deadline Guardian sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Defter Notes ships an update every 2 weeks, Deadline Guardian every 3 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.
| Parameter | Defter Notes | Deadline Guardian |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (75 ratings) — better | — |
| Positive reviews | 75.3% of reviews | — |
| Number of ratings | 75 — better | — |
| Update frequency | Every 2 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 59 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Deft Works ApS | Astratech s.r.o. |
In-app purchases
Defter Notes
- Monthly Plan$2.991 Month
- Mini Supporter$2.991 Month
- Supporter$7.991 Month
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- Yearly Plan$17.991 Year
- Big Supporter$29.991 Month
- Lifetime Access - Welcome Offer$29.99
- Lifetime Access$39.99
Deadline Guardian
- Deadline Guardian Pro$1.991 Month
- Deadline Guardian Pro$9.991 Year
- Pro – lifetime$39.99









